We, and many other operators, used to use reverse thrust on 727's for reversing out of the gate back in the 80's. Procedure was to move forward a few feet and then select reverse thrust and reverse out including turns, to position for taxi.
Our SOP's do not allow that procedure with 737's. We do single engine taxi, on the jurrassics (200) if the T/O weight is below 100000 lbs and on the classics below 110000lbs. Remaining engine must be started so as to allow it to run for 2 minutes at idle before T/O
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